KR20130029264A - Nizncu based ferrite composition, and multilayered chip devices using the same - Google Patents
Nizncu based ferrite composition, and multilayered chip devices using the same Download PDFInfo
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- KR20130029264A KR20130029264A KR1020110092586A KR20110092586A KR20130029264A KR 20130029264 A KR20130029264 A KR 20130029264A KR 1020110092586 A KR1020110092586 A KR 1020110092586A KR 20110092586 A KR20110092586 A KR 20110092586A KR 20130029264 A KR20130029264 A KR 20130029264A
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Abstract
Description
본 발명은 니켈-아연-구리(NiZnCu)계 페라이트 조성물, 및 이를 이용한 적층형 칩 소자에 관한 것이다.The present invention relates to a nickel-zinc-copper (NiZnCu) -based ferrite composition, and a stacked chip device using the same.
일반적으로 적층형 칩 파워 인덕터 등과 같은 자성체 세라믹 부품의 자성 재료는 니켈-아연 페라이트(NiZn ferrite) 또는 니켈-아연-동 페라이트(NiZnCu ferrite) 등이 주로 사용되고 있다. In general, as a magnetic material of a magnetic ceramic component such as a multilayer chip power inductor, nickel-zinc ferrite or nickel-zinc-copper ferrite is mainly used.
이 중에서도, 니켈-아연 페라이트에서 소결성을 좀 더 증가시키고자 Cu를 첨가하여 니켈-아연-동 페라이트의 3원계 조성으로 주로 제조하고 있으나, 상기 Fe 대신 다른 금속 이온을 치환하여 제조하기도 한다. 또한, 니켈-아연-동 페라이트(NiZnCu ferrite)에서 Ni, Zn, Cu 대신 다른 금속 이온을 치환할 수도 있다. 즉, 이온 반경이 비슷한 원소 및 같은 이온가를 가지는 원소로 치환하여 특성을 개선하고 있다. Among them, in order to further increase the sinterability in nickel-zinc ferrite, Cu is mainly manufactured by the ternary composition of nickel-zinc-copper ferrite, but may be prepared by substituting other metal ions instead of Fe. In addition, nickel, zinc-copper ferrite (NiZnCu ferrite) may be substituted for other metal ions instead of Ni, Zn, Cu. That is, the properties are improved by substituting an element having a similar ion radius and an element having the same ion value.
상기 페라이트 소재 중에서도 NiZnCu 페라이트가 적층형 칩 인덕터, 적층형 칩 비드, 적층형 파워 인덕터 등에 가장 일반적으로 사용되고 있고, 이를 구성하는 NiO, ZnO, CuO 및 Fe2O3의 함량을 변화시켜 NiZnCu 페라이트의 투자율, 품질계수 Q, 밀도 및 자성 특성을 변화시켜 원하는 특성을 구현하고 있다. The ferrite material among NiZnCu ferrite the multilayered chip inductor, multilayer chip bead, the can is generally used, by changing the content of NiO, ZnO, CuO and Fe 2 O 3 constituting this magnetic permeability, the quality factor of NiZnCu ferrite or the like multilayer power inductor Q, density and magnetic properties are changed to achieve the desired properties.
한편, 이러한 페라이트 조성물을 이용하여 적층형 칩 인덕터, 적층형 칩 비드 및 적층형 파워 인덕터와 같은 적층형 칩 소자를 만드는데, 상기 칩 소자에서 내부전극으로 대부분 은(Ag)을 사용하고 있다. Meanwhile, the ferrite composition is used to make stacked chip devices such as stacked chip inductors, stacked chip beads, and stacked power inductors, and mostly silver (Ag) is used as an internal electrode in the chip device.
내부전극으로 사용하는 Ag은 녹는점이 961℃ 이므로, 칩 소자를 구현하기 위해서는 961℃ 이하에서 소성이 되는 페라이트 조성물이 필요하다. 소성 온도를 900℃라고 했을 때 이때의 소결 밀도는 최소 약 4.8 g/㎤ 이상이 되면 좋다. Since the Ag used as the internal electrode has a melting point of 961 ° C., a ferrite composition that is fired at 961 ° C. or less is required to implement a chip device. When the sintering temperature is 900 ° C, the sintered density at this time should be at least about 4.8 g / cm 3 or more.
또한, 적층형 파워 인덕터의 경우 DC-DC 컨버터에 사용되고 있는데, 일반적으로 높은 품질계수 Q 값을 가지는 것이 유리하다. 품질계수 Q 값은 크면 클수록 좋은데 이것은 Q 값이 크면 손실이 적음을 의미하기 때문이다. 품질계수 Q 값은 Q=2πfL/Rs로 나타낼 수 있고, 여기서 f는 주파수, L은 인덕턴스 값, Rs는 ESR 저항이다. Rs 저항이 작을수록 DC-DC 컨버터의 효율은 증가하므로 윗 식을 다시 쓰면 Rs=2πfL/Q 로 나타낼 수 있으며, 이때 Q 값이 크면 Rs 값이 낮아지게 된다. 즉, Q값을 증가시키는 것이 칩 소자에 있어서는 매우 중요한 인자가 될 수 있다.
In addition, the multilayer power inductor is used in the DC-DC converter, it is generally advantageous to have a high quality factor Q value. The larger the value of the quality factor Q, the better. This is because a large Q value means less loss. The quality factor Q value can be expressed as Q = 2πfL / Rs, where f is frequency, L is inductance value, and Rs is ESR resistance. The smaller the Rs resistance, the higher the efficiency of the DC-DC converter. Therefore, if we rewrite the above equation, Rs = 2πfL / Q, and if the Q value is large, the Rs value is lowered. In other words, increasing the Q value can be a very important factor in the chip device.
본 발명에서는 적층형 칩 소자에 사용되는 페라이트 조성물에 있어서, 높은 Q 값을 가짐으로써 Rs(ESR 저항)을 낮추고, 결과적으로 적층형 칩 소자의 효율을 높일 수 있는 NiZnCu계 페라이트 조성물을 제공하는 데 그 목적이 있다. The present invention provides a NiZnCu-based ferrite composition capable of lowering Rs (ESR resistance) by increasing a high Q value in a ferrite composition used in a stacked chip device and consequently increasing the efficiency of the stacked chip device. have.
또한, 본 발명의 다른 목적은 상기 페라이트 조성물을 이용하여 높은 품질 계수(Q)를 가지는 토로이달 코어를 제공하는 데도 있다.In addition, another object of the present invention to provide a toroidal core having a high quality factor (Q) by using the ferrite composition.
또한, 본 발명의 추가의 다른 목적은 상기 페라이트 조성물을 이용하여 높은 품질 계수(Q)를 가지는 다양한 적층형 칩 소자를 제공하는 데도 있다.
Further, another object of the present invention is to provide various stacked chip devices having a high quality factor (Q) using the ferrite composition.
본 발명의 과제를 해결하기 위한 일 실시예에 따른 니켈-아연-구리(NiZnCu)계 페라이트 조성물은 Fe2O3 47.0~50.0몰%, NiO 15.0~27.0몰%, ZnO 18.0~25.0몰%, CuO 7.0~13.0몰%를 포함하는 주성분 100중량부에 대하여, 2가 금속 0.001~0.3중량부, 3가 금속 0.001~0.3중량부, 및 4가 금속 0.001~0.5중량부로 포함하는 것을 특징으로 한다.Nickel-zinc-copper (NiZnCu) -based ferrite composition according to an embodiment for solving the problems of the present invention is Fe 2 O 3 47.0 ~ 50.0 mol%, NiO 15.0 ~ 27.0 mol%, ZnO 18.0 ~ 25.0 mol%, CuO It is characterized by including 0.001-0.3 weight part of divalent metals, 0.001-0.3 weight part of trivalent metals, and 0.001-0.5 weight part of tetravalent metals with respect to 100 weight part of main components containing 7.0-13.0 mol%.
본 발명의 일 실시예에 따르면, 상기 2가 금속, 3가 금속, 및 4가 금속은 각 금속의 산화물(oxide) 또는 수산화물(hydroxide) 형태로 포함되는 것일 수 있다. According to an embodiment of the present invention, the divalent metal, trivalent metal, and tetravalent metal may be included in the form of oxide or hydroxide of each metal.
상기 2가 금속은 Co, Mg 및 Mn으로 이루어진 그룹으로부터 선택되는 1종 이상일 수 있다. The divalent metal is Co, Mg and Mn It may be at least one selected from the group consisting of.
상기 3가 금속은 Bi, Al, Ga 및 In으로 이루어진 그룹으로부터 선택되는 1종 이상일 수 있다.The trivalent metal is Bi, Al, Ga and In It may be at least one selected from the group consisting of.
상기 4가 금속은 Ce, S, Ti, Si 및 Zr로 이루어진 그룹으로부터 선택되는 1종 이상일 수 있다.The tetravalent metal is Ce, S, Ti, Si and Zr It may be at least one selected from the group consisting of.
또한, 본 발명의 실시예에 따른 페라이트 조성물은 추가적으로 V, Mo 및 W로 이루어진 그룹으로부터 선택되는 1종 이상의 5가 금속을 포함할 수 있다.
In addition, the ferrite composition according to an embodiment of the present invention is additionally V, Mo and W It may include one or more pentavalent metals selected from the group consisting of.
본 발명의 다른 과제를 해결하기 위하여 상기 NiZnCu계 페라이트 조성물을 이용한 적층형 칩 소자 제품을 제공할 수 있다.
In order to solve the other problem of the present invention, it is possible to provide a multilayer chip device product using the NiZnCu-based ferrite composition.
또한 본 발명의 다른 과제를 해결하기 위하여 상기 NiZnCu계 페라이트 조성물을 이용한 토로이달 코어를 제공할 수 있다.In addition, to solve the other problem of the present invention can provide a toroidal core using the NiZnCu-based ferrite composition.
상기 토로이달 코어의 품질 계수 Q는 250 이상인 것이 바람직하다.
The quality factor Q of the toroidal core is preferably 250 or more.
본 발명에서는 NiZnCu 페라이트에 2가, 3가, 및 4가 금속을 포함하여 품질계수 Q 특성이 우수한 페라이트 조성물을 제공할 수 있다. In the present invention, it is possible to provide a ferrite composition having excellent quality factor Q characteristics, including divalent, trivalent, and tetravalent metals in NiZnCu ferrite.
또한, 상기 페라이트 조성물을 이용하여 소결성, 투자율, 및 품질계수 Q 특성이 우수한 토로이달 코어 및 적층형 칩 소자 제품을 제공할 수 있다.
In addition, it is possible to provide a toroidal core and a laminated chip device product having excellent sinterability, permeability, and quality factor Q characteristics using the ferrite composition.
이하에서 본 발명을 더욱 상세하게 설명하면 다음과 같다. Hereinafter, the present invention will be described in more detail.
본 명세서에서 사용된 용어는 특정 실시예를 설명하기 위하여 사용되며, 본 발명을 제한하기 위한 것이 아니다. 본 명세서에서 사용된 바와 같이, 단수 형태는 문맥상 다른 경우를 분명히 지적하는 것이 아니라면, 복수의 형태를 포함할 수 있다. 또한, 본 명세서에서 사용되는 경우 "포함한다(comprise)" 및/또는 "포함하는(comprising)"은 언급한 형상들, 숫자, 단계, 동작, 부재, 요소 및/또는 이들 그룹의 존재를 특정하는 것이며, 하나 이상의 다른 형상, 숫자, 동작, 부재, 요소 및/또는 그룹들의 존재 또는 부가를 배제하는 것이 아니다.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. Also, as used herein, "comprise" and / or "comprising" specifies the presence of the mentioned shapes, numbers, steps, actions, members, elements and / or groups of these. It is not intended to exclude the presence or the addition of one or more other shapes, numbers, acts, members, elements and / or groups.
본 발명은 NiZnCu계 페라이트 조성물, 이를 이용한 토로이달 코어 및 적층형 칩 소자에 관한 것이다. The present invention relates to a NiZnCu-based ferrite composition, a toroidal core and a stacked chip device using the same.
본 발명에 따른 NiZnCu계 페라이트 조성물은 Fe2O3 47.0~50.0몰%, NiO 15.0~27.0몰%, ZnO 18.0~25.0몰%, CuO 7.0~13.0몰%를 포함하는 주성분 100중량부에 대하여, 2가 금속 0.001~0.3중량부, 3가 금속 0.001~0.3중량부, 및 4가 금속 0.001~0.5중량부로 포함할 수 있다. NiZnCu-based ferrite composition according to the invention is based on 100 parts by weight of the main component containing Fe 2 O 3 47.0-50.0 mol%, NiO 15.0-27.0 mol%, ZnO 18.0-25.0 mol%, CuO 7.0-13.0 mol%, 0.001 to 0.3 parts by weight of valent metal, 0.001 to 0.3 parts by weight of trivalent metal, and 0.001 to 0.5 parts by weight of tetravalent metal.
본 발명의 NiZnCu계 페라이트 조성물은 상기 주성분에 소결성과 Q 특성을 증가시키기 위하여 2가, 3가 및 4가 금속을 첨가하는 데 특징이 있다. 그러나, 상기 2가, 3가 및 4가 금속의 첨가량이 특정 범위를 넘어가면 2차상이 생성되므로, 본 발명에서는 적절한 첨가 중량비를 제한하였다.The NiZnCu-based ferrite composition of the present invention is characterized by adding divalent, trivalent and tetravalent metals in order to increase the sinterability and Q properties to the main component. However, since the secondary phase is produced when the addition amount of the divalent, trivalent and tetravalent metals exceeds a specific range, the appropriate addition weight ratio is limited in the present invention.
상기 2가 금속은 Co, Mg 및 Mn으로 이루어진 그룹으로부터 선택되는 1종 이상이며, 이 중에서 Co 가 가장 바람직하다. The divalent metal is Co, Mg and Mn It is 1 or more types chosen from the group which consists of, and among these, Co is the most preferable.
상기 2가 금속은 NiZnCu 페라이트 주성분 100중량부에 대하여 0.001~0.3중량부로 포함되며, 상기 함량이 0.3중량부를 초과하는 경우 투자율을 감소시킬 수 있어 바람직하지 못하다. 상기 2가 금속의 함량은 산화물로 환산한 것이며, 상기 2가 금속은 예를 들면, CoO와 같은 산화물(oxide) 또는 수산화물(hydroxide) 형태로 포함될 수 있다.
The divalent metal is contained in an amount of 0.001 to 0.3 parts by weight with respect to 100 parts by weight of the NiZnCu ferrite main component, and when the content exceeds 0.3 parts by weight, the permeability may be reduced, which is not preferable. The divalent metal content is converted into an oxide, and the divalent metal may be included, for example, in the form of oxide or hydroxide, such as CoO.
또한, 상기 3가 금속은 Bi, Al, Ga및 In로 이루어진 그룹으로부터 선택되는 1종 이상이며, 이 중에서 Bi 가 가장 바람직하다. In addition, the trivalent metal is Bi, Al, Ga and In It is 1 or more types chosen from the group which consists of, and among these, Bi is the most preferable.
상기 3가 금속은 NiZnCu 페라이트 주성분 100중량부에 대하여 0.001~0.3중량부로 포함되며, 상기 함량이 0.3중량부를 초과하는 경우 칩 제작 시 도금 번짐 등의 불량을 일으킬 수 있으므로 바람직하지 못하다. 상기 3가 금속의 함량은 산화물로 환산한 것이며, 상기 3가 금속은 예를 들면, Bi2O3와 같은 산화물(oxide) 또는 수산화물(hydroxide) 형태로 포함될 수 있다.
The trivalent metal is included in an amount of 0.001 to 0.3 parts by weight with respect to 100 parts by weight of the NiZnCu ferrite main component, and if the content exceeds 0.3 parts by weight, it may not be preferable because it may cause defects such as plating bleeding during chip fabrication. The trivalent metal content is converted into an oxide, and the trivalent metal may be included in an oxide or hydroxide form such as, for example, Bi 2 O 3 .
상기 4가 금속은 Ce, S, Ti, Si 및 Zr로 이루어진 그룹으로부터 선택되는 1종 이상이며, 이 중에서 Ce 가 가장 바람직하다. The tetravalent metal is Ce, S, Ti, Si and Zr It is 1 or more types chosen from the group which consists of, and Ce is the most preferable among these.
상기 4가 금속은 NiZnCu 페라이트 주성분 100중량부에 대하여 0.001~0.5중량부로 포함되며, 상기 함량이 0.5중량부를 초과하는 경우 이온 반경의 차이로 인하여 단일상이 생성되기 어려우므로 바람직하지 못하다. 상기 4가 금속의 함량은 산화물로 환산한 것이며, 상기 4가 금속은 예를 들면, CeO2와 같은 산화물(oxide) 또는 수산화물(hydroxide) 형태로 포함될 수 있다.
The tetravalent metal is contained in an amount of 0.001 to 0.5 parts by weight based on 100 parts by weight of the NiZnCu ferrite main component, and when the content is more than 0.5 parts by weight, it is not preferable because a single phase is hardly generated due to a difference in ion radius. The content of the tetravalent metal is converted into an oxide, and the tetravalent metal may be included, for example, in the form of an oxide or hydroxide, such as CeO 2 .
또한, 본 발명의 실시예에 따른 페라이트 조성물은 추가적으로 V, Mo 및 W로 이루어진 그룹으로부터 선택되는 1종 이상의 5가 금속을 포함할 수 있다. 상기 5가 금속은 소결성 향상을 위하여 선택적으로 첨가할 수 있다.
In addition, the ferrite composition according to an embodiment of the present invention is additionally V, Mo and W It may include one or more pentavalent metals selected from the group consisting of. The pentavalent metal may be optionally added to improve sinterability.
또한, 본 발명의 NiZnCu계 페라이트 조성물은 Fe2O3 47.0~50.0몰%, NiO 15.0~27.0몰%, ZnO 18.0~25.0몰%, 및 CuO 7.0~13.0몰%를 주성분으로 포함한다. In addition, the NiZnCu-based ferrite composition of the present invention contains 47.0-50.0 mol% Fe 2 O 3 , 15.0-27.0 mol% NiO, 18.0-25.0 mol% ZnO, and 7.0-13.0 mol% CuO as main components.
상기 주성분에서 CuO는 소결성을 촉진시키고, 보자력을 떨어뜨리는 역할을 하는 것으로 CuO의 함량이 증가할수록 같은 온도에서 소결성이 더 우수하게 된다. 또한 CuO의 함량 증가는 보자력을 감소시키는 역할을 하게 되어 강자성체의 성질을 떨어뜨리게 된다. 따라서, 산화물로 환산한 함량이 CuO의 함량이 7.0몰% 미만인 경우 소결이 잘 되지 못하는 문제가 있고, 또한 13.0몰%를 초과하는 경우 강자성체적인 성질이 떨어지는 문제가 있을 수 있다.CuO in the main component promotes sinterability, and serves to reduce coercive force, and as the content of CuO increases, the sinterability becomes more excellent at the same temperature. In addition, the increase in the content of CuO serves to reduce the coercive force to degrade the properties of the ferromagnetic material. Therefore, when the content in terms of oxide is less than 7.0 mol% CuO content, there is a problem that the sintering is not good, and if more than 13.0 mol% may have a problem inferior ferromagnetic properties.
또한, 상기 주성분에서 NiO와 ZnO는 투자율과 포화자화 값의 조절을 위하여 적절히 그 함량을 조절하여 포함될 수 있다. 일반적으로 NiO의 함량이 낮고, ZnO의 함량이 높을수록 투자율은 높은 것으로 알려져 있다. 따라서, 원하는 수준의 투자율에 따라 상기 NiO와 ZnO의 함량이 달라질 수 있다. In addition, NiO and ZnO in the main component may be included by appropriately adjusting the content of the magnetic permeability and saturation magnetization value. In general, the lower the NiO content and the higher the ZnO content, the higher the permeability is known. Therefore, the content of NiO and ZnO may vary according to the desired level of permeability.
본 발명에서는 NiO 15.0~27.0몰%와 ZnO 18.0~25.0몰%로 포함되도록 하였다. NiO의 함량이 15.0몰% 미만인 경우 포화자화 값이 작아지고 큐리 온도(curie temperature)가 낮아지며, 또한 27.0몰%를 초과하는 경우 투자율이 낮아지는 문제가 있어서 바람직하지 못하다. In the present invention, NiO 15.0-27.0 mol% and ZnO 18.0-25.0 mol% were included. If the content of NiO is less than 15.0 mol%, the saturation magnetization value is small, the Curie temperature is low, and if it exceeds 27.0 mol%, the permeability is low, which is not preferable.
또한, 상기 ZnO의 함량이 18.0몰% 미만인 경우 투자율이 낮아지고, 또한 25.0몰%를 초과하는 경우 포화자화 값이 작아지고, 큐리 온도가 낮아지는 문제가 있어서 바람직하지 못하다.
In addition, when the ZnO content is less than 18.0 mol%, the permeability is low, and when the content of ZnO is more than 25.0 mol%, the saturation magnetization value is small and the Curie temperature is low.
본 발명에 따른 NiZnCu계 페라이트 조성물은 2가 금속, 3가 금속 및 4가 금속을 포함함으로써 품질계수 Q 특성이 매우 향상되는 효과를 가진다. NiZnCu-based ferrite composition according to the present invention has the effect that the quality factor Q characteristics are greatly improved by including a divalent metal, a trivalent metal and a tetravalent metal.
또한, 본 발명에 따른 NiZnCu계 페라이트 조성물은 900℃ 이하의 온도에서도 소성이 가능하기 때문에 은(Ag)을 내부 전극으로 가지는 인덕터 부품에서도 소성시 내부 전극의 확산을 억제할 수 있기 때문에 상기 인덕터 부품의 특성을 개선시킬 수 있다.
In addition, since the NiZnCu-based ferrite composition according to the present invention can be fired even at a temperature of 900 ° C. or lower, the inductor component having silver (Ag) as an internal electrode can suppress diffusion of the internal electrode during firing. Properties can be improved.
본 발명의 NiZnCu계 페라이트 조성물의 제조방법에 대해 상세히 설명하면 다음과 같다. Hereinafter, the method for preparing the NiZnCu-based ferrite composition of the present invention will be described in detail.
먼저 페라이트 원료를 준비한다. 페라이트 원료로서 Fe, Ni, Zn, Cu, 2가, 3가, 및 4가 금속의 금속 염을 각각 준비하고 이들을 칭량한다. 이때 사용되는 금속 염은 상기 기재된 바와 같이 산화물(oxide), 또는 수산화물(hydroxide)이 사용될 수 있다. First, prepare ferrite raw material. As ferrite raw materials, metal salts of Fe, Ni, Zn, Cu, divalent, trivalent and tetravalent metals are prepared and weighed, respectively. In this case, as the metal salt used, an oxide or a hydroxide may be used as described above.
그런 다음, 상기 재료를 액상 밀링한 후 건조 오븐에서 건조한다. 건조 분말을 분쇄시킨 후 700~800℃ 온도에서 하소한다. 하소 온도는 2차상인 헤마타이트(a-Fe2O3) 상이 생성되지 않고 페라이트 단일상이 생성되는 온도로 설정한다. 하소 분말을 밀링에 의해 분쇄시켜 최종적인 페라이트 분말을 제조한다.The material is then liquid milled and dried in a drying oven. The dry powder is pulverized and then calcined at a temperature of 700 to 800 ° C. The calcination temperature is set to the temperature at which the ferrite single phase is produced without generating the hematite (a-Fe 2 O 3 ) phase as the secondary phase. The calcined powder is ground by milling to produce the final ferrite powder.
이와 같이 제조된 페라이트 분말은 산화물로 환산한 각 함량이 Fe2O3 47.0~50.0몰%, NiO 15.0~27.0몰%, ZnO 18.0~25.0몰%, CuO 7.0~13.0몰%를 포함하는 주성분 100중량부에 대하여, 2가 금속 0.001~0.3중량부, 3가 금속 0.001~0.3중량부, 및 4가 금속 0.001~0.5중량부로 포함되는 것이 바람직하다.
The ferrite powder prepared as described above is 100% by weight of the main component including each content of Fe 2 O 3 47.0-50.0 mol%, NiO 15.0-27.0 mol%, ZnO 18.0-25.0 mol%, CuO 7.0-13.0 mol% It is preferable to be contained in 0.001-0.3 weight part of divalent metals, 0.001-0.3 weight part of trivalent metals, and 0.001-0.5 weight part of tetravalent metals with respect to a part.
본 발명에 따른 페라이트 분말은 공지된 고상법, 액상법에 의해 제조될 수 있으며, 그 제조방법에 특별히 한정되지는 않는다. Ferrite powder according to the present invention can be prepared by a known solid-phase method, a liquid phase method, it is not particularly limited to the production method.
한편, 본 발명은 상기 페라이트 분말을 포함하는 페라이트 조성물을 이용하여 페라이트 시트를 제조하고, 내부 전극을 인쇄한 후 펀칭, 압착 및 절단 공정을 거치고 소성공정을 거쳐 칩 파워 인덕터와 같은 저온소성 자성체 세라믹 부품을 제조하게 된다. Meanwhile, the present invention manufactures a ferrite sheet using a ferrite composition containing the ferrite powder, and after printing the internal electrode through a punching, pressing and cutting process, and a firing process, a low-temperature fired magnetic ceramic component such as a chip power inductor It will be prepared.
또한, 상기 칩 인덕터와 같은 저온소성 자성체 세라믹 부품뿐만 아니라 토로이달 코어 형태의 인덕터 재료로도 사용할 수 있다. In addition, it can be used as a toroidal core type inductor material as well as low-temperature fired magnetic ceramic components such as the chip inductor.
상기와 같은 부품으로 제조하는 경우 850~920℃, 바람직하기로는 880~920℃ 사이의 온도에서 소결시켜 적층형 칩 비드 재료, 칩 인덕터 및 토로이달 코어를 제공할 수 있다.In the case of manufacturing the components as described above, sintering may be performed at a temperature between 850 ° C. and 920 ° C., preferably 880 ° C. and 920 ° C., to provide a stacked chip bead material, a chip inductor, and a toroidal core.
본 발명의 바람직한 실시예에 따르면, 상기 토로이달 코어의 품질 계수 Q는 250 이상인 것이 바람직하다.
According to a preferred embodiment of the present invention, the quality factor Q of the toroidal core is preferably 250 or more.
이하에서 본 발명의 바람직한 실시예를 상세히 설명하기로 한다. 이하의 실시예는 본 발명을 예시하기 위한 것일 뿐, 본 발명의 범위가 이들 실시예에 의해 제한되는 것으로 해석되어서는 안 된다. 또한, 이하의 실시예에서는 특정 화합물을 이용하여 예시하였으나, 이들의 균등물을 사용한 경우에 있어서도 동등 유사한 정도의 효과를 발휘할 수 있음은 당업자에게 자명하다.
Hereinafter, preferred embodiments of the present invention will be described in detail. The following examples are intended to illustrate the present invention, but the scope of the present invention should not be construed as being limited by these examples. In the following examples, specific compounds are exemplified. However, it is apparent to those skilled in the art that equivalents of these compounds can be used in similar amounts.
실시예Example 1~3 및 1-3 and 비교예Comparative example 1~5 1-5
다음 표 1에 나타낸 조성을 이용하여 실시예와 비교예에 따른 NiZnCu계 페라이트 조성물을 제조하였다. To prepare a NiZnCu-based ferrite composition according to the Example and Comparative Example using the composition shown in Table 1.
각 출발원료로서 NiZnCu 페라이트 금속, 및 2가 금속, 3가 금속, 4가 금속의 산화물을 각 함량대로 칭량하여 혼합한 후, 상기 재료를 액상 밀링한 후 건조 오븐에서 건조시켰다. 건조된 분말을 분쇄시킨 후 700~800℃ 온도에서 하소시켰다. 하소 후 밀링 과정을 거치고 건조, 해쇄하여 페라이트 조성물 분말을 얻었다.NiZnCu ferritic metals and oxides of divalent metals, trivalent metals, and tetravalent metals were weighed and mixed as respective starting materials, and the materials were liquid milled and dried in a drying oven. The dried powder was pulverized and then calcined at a temperature of 700 to 800 ° C. After calcination, a milling process, drying and pulverization were performed to obtain a ferrite composition powder.
실험예Experimental Example
상기 실시예 및 비교예에 따라 제조된 각 페라이트 조성물을 토로이달 코어 형태로 제조한 후 880~920℃ 사이의 온도에서 소성한 후 투자율, Q값, 밀도 등을 측정하였다. 투자율 및 Q 값은 토로이달 코어에 와이어를 10번 감은 후 1 Mhz에서 측정하였으며, 그 결과를 다음 표 2에 나타내었다.Each ferrite composition prepared according to the Examples and Comparative Examples was prepared in the form of a toroidal core, and then calcined at a temperature between 880 ° C and 920 ° C, and then a permeability, a Q value, a density, and the like were measured. Permeability and Q values were measured at 1 Mhz after winding the wire 10 times in the toroidal core, and the results are shown in Table 2 below.
상기 표 2의 결과에서와 같이, NiZnCu계 페라이트에 +2가의 CoO, +3가의 Bi2O3, +4가의 CeO2를 첨가함으로써, 품질계수 Q 값이 매우 증가함을 알 수 있다. 또한, 추가적으로 +5가인 V2O5를 첨가하는 경우(실시예 2) 소결성을 더 개선시킬 수 있었다. As shown in the results of Table 2 above, it can be seen that the quality factor Q is greatly increased by adding + divalent CoO, + trivalent Bi 2 O 3 , and + tetravalent CeO 2 to the NiZnCu ferrite. In addition, in the case of adding V 2 O 5 having an additional +5 valence (Example 2), the sinterability could be further improved.
그러나, NiZnCu 페라이트 주성분으로만 구성된 비교예 1, 또한, 2가 금속, 3가 금속, 및 4가 금속을 모두 포함하지 않고 이들을 1~2종 포함하는 비교예 2~5의 경우 소결성, 투자율, 품질계수 Q 값이 모두 본 발명의 실시예에 따른 NiZnCu계 페라이트 조성물을 이용하는 경우보다 떨어지는 것으로 측정되었다. However, in the case of Comparative Example 1 composed only of NiZnCu ferrite main components, and Comparative Examples 2 to 5 containing not one of all divalent metals, trivalent metals, and tetravalent metals but one or two of them, sinterability, permeability, and quality The coefficient Q values were all measured to be lower than those using the NiZnCu-based ferrite composition according to the embodiment of the present invention.
특히, 본 발명의 실시예에 따른 NiZnCu계 페라이트 조성물을 이용한 토로이달 코어는 품질계수 Q값이 250 이상의 높은 값을 가짐을 알 수 있다.
In particular, it can be seen that the toroidal core using the NiZnCu-based ferrite composition according to the embodiment of the present invention has a high quality factor Q of 250 or more.
이러한 결과로부터, 본 발명과 같이 NiZnCu계 페라이트 주성분에 2가 금속, 3가 금속 및 4가 금속을 포함함으로써 페라이트의 소결성, 투자율, 및 품질계수 Q 특성을 모두 개선시킬 수 있음을 확인하였다.
From these results, it was confirmed that the sinterability, permeability, and quality factor Q characteristics of the ferrite can be improved by including the divalent metal, the trivalent metal, and the tetravalent metal in the NiZnCu-based ferrite main components as in the present invention.
Claims (9)
2가 금속 0.001~0.3중량부, 3가 금속 0.001~0.3중량부, 및 4가 금속 0.001~0.5중량부로 포함하는 니켈-아연-구리(NiZnCu)계 페라이트 조성물.
To 100 parts by weight of the main component containing Fe 2 O 3 47.0-50.0 mol%, NiO 15.0-27.0 mol%, ZnO 18.0-25.0 mol%, CuO 7.0-13.0 mol%,
A nickel-zinc-copper (NiZnCu) -based ferrite composition comprising 0.001 to 0.3 parts by weight of a divalent metal, 0.001 to 0.3 parts by weight of a trivalent metal, and 0.001 to 0.5 parts by weight of a tetravalent metal.
상기 2가 금속, 3가 금속, 및 4가 금속은 각 금속의 산화물(oxide) 또는 수산화물(hydroxide) 형태로 포함되는 것인 니켈-아연-구리(NiZnCu)계 페라이트 조성물.
The method of claim 1,
The divalent metal, the trivalent metal, and the tetravalent metal are nickel-zinc-copper (NiZnCu) -based ferrite compositions which are included in the form of an oxide or hydroxide of each metal.
상기 2가 금속은 Co, Mg 및 Mn로 이루어진 그룹으로부터 선택되는 1종 이상인 니켈-아연-구리(NiZnCu)계 페라이트 조성물.
The method of claim 1,
The divalent metal is Co, Mg and Mn At least one nickel-zinc-copper (NiZnCu) -based ferrite composition selected from the group consisting of:
상기 3가 금속은 Bi, Al, Ga 및 In로 이루어진 그룹으로부터 선택되는 1종 이상인 니켈-아연-구리(NiZnCu)계 페라이트 조성물.
The method of claim 1,
The trivalent metal is Bi, Al, Ga and In At least one nickel-zinc-copper (NiZnCu) -based ferrite composition selected from the group consisting of:
상기 4가 금속은 Ce, S, Ti, Si 및 Zr로 이루어진 그룹으로부터 선택되는 1종 이상인 니켈-아연-구리(NiZnCu)계 페라이트 조성물.
The method of claim 1,
The tetravalent metal is Ce, S, Ti, Si and Zr At least one nickel-zinc-copper (NiZnCu) -based ferrite composition selected from the group consisting of:
추가적으로 V, Mo 및 W로 이루어진 그룹으로부터 선택되는 1종 이상의 5가 금속을 포함하는 니켈-아연-구리(NiZnCu)계 페라이트 조성물.
The method of claim 1,
Additionally with V, Mo and W A nickel-zinc-copper (NiZnCu) based ferrite composition comprising at least one pentavalent metal selected from the group consisting of:
A multilayer chip device product using a nickel-zinc-copper (NiZnCu) based ferrite composition according to claim 1.
Toroidal core using a nickel-zinc-copper (NiZnCu) -based ferrite composition according to claim 1.
상기 니켈-아연-구리(NiZnCu)계 페라이트 조성물을 이용한 토로이달 코어의 품질 계수 Q는 250 이상인 토로이달 코어.The method of claim 8,
Toroidal core quality coefficient Q of the toroidal core using the nickel-zinc-copper (NiZnCu) -based ferrite composition is 250 or more.
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| CN109678481B (en) * | 2019-02-15 | 2021-03-16 | 苏州世诺新材料科技有限公司 | Preparation method of composite ferrite sheet |
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| KR100222757B1 (en) * | 1996-11-30 | 1999-10-01 | 이형도 | A soft magnetic material for inductor and a method for manufacturing therewith |
| JP2000124022A (en) * | 1998-10-15 | 2000-04-28 | Tokin Corp | Low-loss oxide magnetic material |
| JP4404408B2 (en) * | 1999-07-29 | 2010-01-27 | 京セラ株式会社 | High saturation magnetic flux density ferrite material and ferrite core using the same |
| JP3698248B2 (en) * | 2000-01-21 | 2005-09-21 | Ｔｄｋ株式会社 | Method for manufacturing oxide magnetic material for coil parts |
| JP4587541B2 (en) * | 2000-09-27 | 2010-11-24 | 京セラ株式会社 | Ferrite material and ferrite core using the same |
| JP5105660B2 (en) * | 2000-12-08 | 2012-12-26 | 京セラ株式会社 | Ferrite material and ferrite core using the same |
| JP3421656B2 (en) | 2001-02-15 | 2003-06-30 | ティーディーケイ株式会社 | Ferrite materials and components for ceramic inductors |
| JP4576727B2 (en) | 2001-02-23 | 2010-11-10 | 株式会社村田製作所 | Oxide magnetic ceramic composition and inductor component using the same |
| JP2007076985A (en) | 2005-09-16 | 2007-03-29 | Nec Tokin Corp | LOW LOSS Ni-Cu-Zn-BASED FERRITE |
| US8004381B2 (en) * | 2006-07-05 | 2011-08-23 | Hitachi Metals, Ltd. | Laminated device |
| JP5702913B2 (en) * | 2009-03-30 | 2015-04-15 | 双信電機株式会社 | Ferrite materials and electronic components |
| KR20120036536A (en) * | 2010-10-08 | 2012-04-18 | 삼성전기주식회사 | Ferrite composition for high frequency bead and chip bead comprising the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101321733B1 (en) * | 2013-04-12 | 2013-10-29 | 김철주 | Ferrite usung core and its production method |
| KR20190088005A (en) * | 2018-01-17 | 2019-07-25 | 티디케이가부시기가이샤 | Ferrite sintered body and electronic component using thereof |
Also Published As
| Publication number | Publication date |
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| JP2013060361A (en) | 2013-04-04 |
| US20130062553A1 (en) | 2013-03-14 |
| JP5801776B2 (en) | 2015-10-28 |
| US8679362B2 (en) | 2014-03-25 |
| KR101548775B1 (en) | 2015-09-01 |
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